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Use Tree to display xml document

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Xml.Linq; using System.Xml;     public class Form1 : Form     {         public Form1()         {             InitializeComponent();         }         private void button1_Click(object sender, EventArgs e)         {             XElement root = XElement.Load("Employees.xml");             TreeNode rootNode = new TreeNode(root.Name.LocalName);             treeView1.Nodes.Add(rootNode);             foreach(XElement employee in root.Elements())             {                 TreeNode employeeNode = new TreeNode("Employee ID :" + employee.Attribute("employeeid").Value);                 rootNode.Nodes.Add(employeeNode);                 if (employee.HasElements)                 {                     foreach(XElement employeechild in employee.Descendants())                     {                         TreeNode childNode = new TreeNode(employeechild.Value);                         employeeNode.Nodes.Add(childNode);                     }                 }             }         }         private void InitializeComponent()         {             this.treeView1 = new System.Windows.Forms.TreeView();             this.button1 = new System.Windows.Forms.Button();             this.SuspendLayout();             //              // treeView1             //              this.treeView1.Dock = System.Windows.Forms.DockStyle.Top;             this.treeView1.Location = new System.Drawing.Point(0, 0);             this.treeView1.Margin = new System.Windows.Forms.Padding(4, 4, 4, 4);             this.treeView1.Name = "treeView1";             this.treeView1.Size = new System.Drawing.Size(389, 278);             this.treeView1.TabIndex = 0;             //              // button1             //              this.button1.Location = new System.Drawing.Point(145, 286);             this.button1.Margin = new System.Windows.Forms.Padding(4, 4, 4, 4);             this.button1.Name = "button1";             this.button1.Size = new System.Drawing.Size(100, 28);             this.button1.TabIndex = 1;             this.button1.Text = "Load Tree";             this.button1.UseVisualStyleBackColor = true;             this.button1.Click += new System.EventHandler(this.button1_Click);             //              // Form1             //              this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;             this.ClientSize = new System.Drawing.Size(389, 327);             this.Controls.Add(this.button1);             this.Controls.Add(this.treeView1);             this.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));             this.Margin = new System.Windows.Forms.Padding(4, 4, 4, 4);             this.Name = "Form1";             this.Text = "Form1";             this.ResumeLayout(false);         }         private System.Windows.Forms.TreeView treeView1;         private System.Windows.Forms.Button button1;     }     static class Program     {         [STAThread]         static void Main()         {             Application.EnableVisualStyles();             Application.SetCompatibleTextRenderingDefault(false);             Application.Run(new Form1());         }     }